Use 3.14 for π. Round answers to the nearest hundredth if necessary.
The figure shows a circle with a point Upper X labeled at the center.
Calculate the area of Circle X if the diameter is 13 inches.
____ square inches
Calculate the radius of Circle X if the circumference is 138.16 square millimeters.
______millimeters
Im confused at what you did fr the first question.and i looked at the second question yeah i dont no what they were thinking?
this was so bad liike not even help full
ur mom is correct
To calculate the area of Circle X, we can use the formula:
Area = π * r^2
Given that the diameter of Circle X is 13 inches, we can find the radius by dividing the diameter by 2:
Radius = Diameter / 2 = 13 inches / 2 = 6.5 inches
Now, we can substitute the value of the radius into the formula to find the area:
Area = 3.14 * (6.5 inches)^2
Calculating this expression, we get:
Area = 3.14 * (42.25 square inches) ≈ 132.665 square inches
Rounding to the nearest hundredth, the area of Circle X is approximately 132.67 square inches.
To calculate the radius of Circle X, we can use the formula:
Circumference = 2 * π * r
Given that the circumference is 138.16 square millimeters, we can rearrange the formula to solve for the radius:
r = Circumference / (2 * π)
Substituting the given values:
r = 138.16 square millimeters / (2 * 3.14)
Calculating this expression, we get:
r ≈ 138.16 square millimeters / 6.28 ≈ 22.00 millimeters
Rounding to the nearest hundredth, the radius of Circle X is approximately 22.00 millimeters.
area = π * (diameter^2 ) / 4
radius = circumference / (2 π)
2nd question has a glitch
... circumference is a length ... units should not be square anything